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Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
PDDC- SEMESTER-IV EXAMINATION SUMMER 2017
Subject Code: X41103 Date:31/05/2017
Subject Name: Integrated Circuits and Applications
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1

Draw and explain block diagram of typical op-amp. Also draw equivalent circuit of it.
07

Define following terms with respect to op-amp
ICMR CMRR Slew Rate PSSR
Bandwidth Input offset voltage Input bias current.
07
Q.2

Define negative feedback. List types of feedback and explain voltage series feedback.
07

Draw and explain differential amplifier using one op-amp.
07
OR

Draw and explain peaking amplifierDraw and explain peaking amplifierDraw and explain peaking amplifier Draw and explain peaking amplifier Draw and explain peaking amplifier Draw and explain peaking amplifier Draw and explain peaking amplifier Draw and explain peaking amplifierDraw and explain peaking amplifierDraw and explain peaking amplifier Draw and explain peaking amplifier Draw and explain peaking amplifier Draw and explain peaking amplifierDraw and explain peaking amplifierDraw and explain peaking amplifierDraw and explain peaking amplifier using opusing op using op using op -ampampamp.
07
Q.3

The following specifications are given for differential amplifier of figure shown above. R1=R3=680 ohm, RF R2= 6.8 kΩ, Vx= -1.5Vpp, and Vy= -2Vpp sine waves at 1kHz.The op-amp is 741C. Calculate
voltage gain and i/p resistance and
o/p voltage of amplifier. Assume o/p is initially nulled (VooT 0V).
07

Explain opamp as summing amplifier.
07
OR
RFR1-VEEU1A132411OUT+-V+V-Vy+VCCVx-VEER3=R1+VCCR2=RFU1A132411OUT+-V+V-
2
Q.3

741C op-amp having following parameters is connected as non-inverting amplifier, as shown in above figure, with R1=1 KΩ and RF=10 KΩ
A=200,000, Ri=2 MΩ Ro=75 Ω fo≅5 Hz Supply voltage ± 15 V
Output voltage swing ±13V.
Compute values of AF, RiF, RoF, fF and VooT.
07

Explain op-amp as differentiator with necessary figures.
07
Q.4

Draw sample and hold circuit diagram using op-amp. Also explain working of it.
07

Draw Schmitt trigger circuit diagram using op-amp. Also explain working of it.
07
OR
Q.4

Draw triangular and saw-toothed waveform generator circuit diagram using op-amp. Also explain working of it.
07

Explain classifications of filters. Draw Butterworth Low pass filter circuit diagram.
07
Q.5

Explain Block diagram of 555 timer IC. List applications of it.
07

Explain running ramp generator using op-amp.
07
OR
Q.5

Draw Block diagram of PLL and explain it.
07

Explain Voltage regulators. List different types of it. Also list application of it.
07